LG -A230 Service Manual page 68

CIRCUIT
ANT500
GND500
2.2n
C522
C523
100p
C521
DNI
L516
DNI
C511
L517
0.5p
12n
CONTROL LOGIC
LGE Internal Use Only
.
. .
TP3
TX_EN
.
.
SW500
L504 2.7n
G2
ANT RF
G1
C513
C512
1.2p
DNI
Low Band(850/900)Tx
TP2 (VLOGIC)
TP3(Tx_EN)
TP1 (RF_BS)
FL500
1 I1 9
O1-1
8
O1-2
7
O2-1
4 6
I2
O2-2
10 5 3 2
6.8n
L511
L510 6.8n
TP1
BS
.
RSVD2
14
GND13 RSVD1
23 13
GND12
24
GND11 BS
25 12
U500
ANT VSW_EN
26 11
L505
GND10 Tx_HB_IN
27 10
GND9
C515
28
PGND Tx_LB_IN
29 9
VBAT
TP2
VLOGIC
C518 C519 C520
6.8p 10u
DNI
10 uF,10V ,Z ,Y5V ,HD ,2012 ,R/TP
IN CASE OF GSM850/PCS1900
CHANGE THIS MODULE
- 68 - Copyright © 011 LG Electronics. Inc. All right reserved.
4. TROUBLE SHOOTING
3.9n
L512
RF_HB_RXP
L500 L501
DNI DNI
3.9n
L513
RF_HB_RXN
L514 15n
RF_LB_RXP
L503 L502
DNI DNI
L515 15n
RF_LB_RXN
TP3
RF_TX_EN
R501 1K
RF_TX_RAMP
C506
1n
C507
39p
TP1
RF_2G_BS
C508
1n
TP
2.2nH L506 2.2nH
RF_HB_TX
L507 2.2nH
33p
C514
RF_LB_TX
1n
L508 L509
1.5n
1.5n
C516 C517
1.2p 1p
Only for training and service purposes
RF_VLOGIC